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Chin. Phys. B, 2023, Vol. 32(2): 025202    DOI: 10.1088/1674-1056/ac6b23

Gyrokinetic simulation of low-n Alfvénic modes in tokamak HL-2A plasmas

Wen-Hao Lin(林文浩)1, Ji-Quan Li(李继全)1,†, J Garcia2, and S Mazzi3
1 Southwestern Institute of Physics, Chengdu 610041, China;
2 CEA, IRFM, 13108, Saint-Paul-lez-Durance, France;
3 EPFL, Swiss Plasma Center, Lausanne, Switzerland
Abstract  The turbulence characteristics of plasmas with internal transport barriers in the HL-2A tokamak are analyzed by means of linear gyrokinetic simulations. It is found that turbulence is dominated by the ion temperature gradient (ITG) mode together with large-scale modes characterized by high-frequency electromagnetic fluctuation, which are destabilized by the steep ion temperature gradient in the weak magnetic shear regime. Comparison with solutions of analytical dispersion relations shows that their linear features match well with the beta-induced Alfvén eigenmode branch of the shear Alfvénic spectrum. It is further clarified that the large population of fast ions in these plasmas plays a stabilization role through the dilution mechanism in high-n ITG mode regimes.
Keywords:  low-n Alfvénic modes      fast ions      gyrokinetic simulation      tokamak  
Received:  15 February 2022      Revised:  23 April 2022      Accepted manuscript online:  28 April 2022
PACS:  52.35.-g (Waves, oscillations, and instabilities in plasmas and intense beams)  
  52.35.Bj (Magnetohydrodynamic waves (e.g., Alfven waves))  
  52.55.Pi (Fusion products effects (e.g., alpha-particles, etc.), fast particle effects)  
  52.65.Tt (Gyrofluid and gyrokinetic simulations)  
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFE0301201) and also partially by the National Natural Science Foundation of China (Grant Nos. U1967206 and 11775069).
Corresponding Authors:  Ji-Quan Li     E-mail:

Cite this article: 

Wen-Hao Lin(林文浩), Ji-Quan Li(李继全), J Garcia, and S Mazzi Gyrokinetic simulation of low-n Alfvénic modes in tokamak HL-2A plasmas 2023 Chin. Phys. B 32 025202

[1] Mantica P, Strintzi D, Tala T, Giroud C, Johnson T, Leggate H, Lerche E, Loarer T, Peeters A G and Salmi A 2009 Phys. Rev. Lett. 102 175002
[2] Mantica P, Angioni C, Challis C, Colyer G, Frassinetti L, Hawkes N, Johnson T, Tsalas M, Devries P C and Weiland J 2011 Phys. Rev. Lett. 107 135004
[3] Citrin J, Jenko F, Mantica P, Told D, Bourdelle C, Garcia J, Haverkort J W, Hogeweij G M D, Johnson T and Pueschel M J 2013 Phys. Rev. Lett. 111 155001
[4] Citrin J, Garcia J, Görler T, Jenko F, Mantica P, Told D, Bourdelle C, Hatch D R, Hogeweij G M D, Johnson T, Pueschel M J, Schneider M and JET-EFDA Contributors 2014 Plasma Phys. Control. Fusion 57 014032
[5] Garcia J, Challis C, Citrin J, Doerk H, Giruzzi G, Görler T, Jenko F, Maget P and JET Contributors 2015 Nucl. Fusion 55 053007
[6] Garcia J, Grler T and Jenko F 2018 Phys. Plasmas 25 055902
[7] Siena A Di, Görler T, Doerk H, Poli E and Bilato R 2018 Nucl. Fusion 58 054002
[8] Jenko F, Dorland W, Kotschenreuther M and Rogersa B N 2000 Phys. Plasmas 7 1904
[9] Nocente M, Kazakov Ye O, Garcia J, et al. 2020 Nucl. Fusion 60 124006
[10] Kazakov Ye O, Ongena J, Wright J C, et al. 2021 Phys. Plasmas 28 020501
[11] Mazzi S, Garcia J, Zarzoso D, Kazakov Ye O, Ongena J, Görler T, Nocente M, Dreval M, Stancar M, Szepesi G, Eriksson J, Sahlberg A and Benkadda S 2020 arXiv: 2010.07977
[12] Yu D L, Wei Y L, Liu L, et al. 2016 Nucl. Fusion 56 056003
[13] Zonca F, Chen L and Santoro R A 1996 Plasma Phys. Control. Fusion 38 2011
[14] Görler T, Lapillonne X, Brunner S, Dannert T, Jenko F, Merz F and Told D 2012 Journal of Computational Physics 230 7053
[15] Shi Z B, Jiang M, Huang X L, Zhong W L, Chen W, Che Y L, Liu Z T, Ding X T, Yang Q W and Duan X R 2014 Rev. Sci. Instrum. 85 023510
[16] Wei Y L, Yu D L, Liu L, Ida K, Hellermann M V, Cao J Y, Sun A P, Ma Q, Chen W J, Liu Y, Yan L W, Yang Q W, Duan X R and Liu Y 2014 Rev. Sci. Instrum. 85 103503
[17] Pankin A, McCune D, Andre R, Bateman G and Kritz A 2004 Computer Physics Communications 159 157
[18] Connor J W, Hastie R J and Taylor J B 1978 Phys. Rev. Lett. 40 396
[19] Zonca F and Chen L 2014 Phys. Plasmas 21 072120
[20] Manickam J and Pomphrey N 1987 Nucl. Fusion 27 1461
[21] Kim J Y, Horton W and Dong J Q 1993 Phys. Fluids B 5 4030
[22] Merz F 2008 Gyrokinetic Simulation of Multimode Plasma Turbulence (Ph.D. Dissertation) (University of Münster)
[23] Told D 2012 Gyrokinetic Microturbulence in Transport Barriers (Ph.D. Dissertation) (University of Ulm)
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